CitectScada 2018 Deployment Client service on Engineering work station and Primary IO server couldn't start .

i have this error when i start CitectScada 2018 deployment client service.it reads 'The Citect Deployment citect Service service on Local computer started and then stopped. Some services stop automatically if they are not in use by other services or program'. The firewall has been disabled as well as the ports have been checked. i have tried backdated windows update if lack will come in but unsuccessful. 

Can someone of such experience assist please.